return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for NH2COOC2H5 (Urethane)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-323.706948
Energy at 298.15K-323.716101
Nuclear repulsion energy247.467957
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B1B95/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3744 3594 44.84      
2 A 3625 3480 26.54      
3 A 3152 3026 21.21      
4 A 3144 3019 20.40      
5 A 3064 2942 26.01      
6 A 3064 2942 14.34      
7 A 3006 2886 42.50      
8 A 1876 1801 544.49      
9 A 1626 1561 146.19      
10 A 1522 1462 1.74      
11 A 1498 1439 3.68      
12 A 1477 1418 7.45      
13 A 1432 1375 10.02      
14 A 1399 1344 44.73      
15 A 1347 1293 361.23      
16 A 1312 1260 1.41      
17 A 1177 1130 5.51      
18 A 1162 1115 43.91      
19 A 1122 1077 84.75      
20 A 1091 1048 41.41      
21 A 1000 960 16.52      
22 A 869 834 13.97      
23 A 841 807 0.66      
24 A 780 749 30.64      
25 A 577 554 17.70      
26 A 554 532 4.89      
27 A 533 512 64.81      
28 A 387 371 14.38      
29 A 358 344 136.28      
30 A 261 250 0.37      
31 A 221 212 3.04      
32 A 117 112 0.54      
33 A 94 91 1.59      

Unscaled Zero Point Vibrational Energy (zpe) 23715.9 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 22769.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B1B95/6-311G**
ABC
0.29611 0.07165 0.05911

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.542 -0.246 0.050
H2 2.683 -0.868 -0.834
H3 3.360 0.474 0.103
H4 2.583 -0.886 0.930
C5 1.218 0.471 -0.016
H6 1.062 1.091 0.873
H7 1.179 1.116 -0.903
O8 0.198 -0.521 -0.095
N9 -1.379 1.157 0.074
H10 -0.735 1.840 -0.284
H11 -2.355 1.382 -0.011
C12 -1.110 -0.186 -0.010
O13 -1.952 -1.039 0.029

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 O8 N9 H10 H11 C12 O13
C11.08971.09101.08961.50772.15742.14932.36434.16443.89885.16073.65284.5633
H21.08971.77151.76752.14703.06192.49032.61514.62824.39485.57813.94074.7174
H31.09101.77151.77162.14562.50022.48563.32034.78754.33385.78724.51945.5233
H41.08961.76751.77162.14492.49443.05592.62094.53874.46235.51423.87384.6255
C51.50772.14702.14562.14491.09431.09741.42462.68682.39943.68652.41823.5109
H62.15743.06192.50022.49441.09431.77942.06912.56932.26503.54132.66933.7856
H72.14932.49032.48563.05591.09741.77942.07262.73842.13783.65452.78103.9138
O82.36432.61513.32032.62091.42462.06912.07262.30912.54583.18541.35312.2151
N94.16444.62824.78754.53872.68682.56932.73842.30911.00451.00511.37202.2698
H103.89884.39484.33384.46232.39942.26502.13782.54581.00451.70542.07843.1411
H115.16075.57815.78725.51423.68653.54133.65453.18541.00511.70542.00202.4544
C123.65283.94074.51943.87382.41822.66932.78101.35311.37202.07842.00201.1992
O134.56334.71745.52334.62553.51093.78563.91382.21512.26983.14112.45441.1992

picture of Urethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 111.021 C1 C5 H7 110.194
C1 C5 O8 107.435 H2 C1 H3 108.653
H2 C1 H4 108.398 H2 C1 C5 110.470
H3 C1 H4 108.677 H3 C1 C5 110.279
H4 C1 C5 110.308 C5 O8 C12 121.028
H6 C5 H7 108.566 H6 C5 O8 109.763
H7 C5 O8 109.855 O8 C12 N9 115.842
O8 C12 O13 120.303 N9 C12 O13 123.818
H10 N9 H11 116.118 H10 N9 C12 121.204
H11 N9 C12 113.851
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.339      
2 H 0.140      
3 H 0.122      
4 H 0.142      
5 C -0.114      
6 H 0.138      
7 H 0.119      
8 O -0.307      
9 N -0.484      
10 H 0.230      
11 H 0.243      
12 C 0.470      
13 O -0.362      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.337 4.349 -0.576 4.971
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.506 -5.843 0.894
y -5.843 -35.761 -1.361
z 0.894 -1.361 -35.981
Traceless
 xyz
x 0.365 -5.843 0.894
y -5.843 -0.018 -1.361
z 0.894 -1.361 -0.347
Polar
3z2-r2-0.695
x2-y20.256
xy-5.843
xz0.894
yz-1.361


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.794 0.283 -0.080
y 0.283 7.053 -0.063
z -0.080 -0.063 5.125


<r2> (average value of r2) Å2
<r2> 190.176
(<r2>)1/2 13.790